Apparatus for controlling toner replenishment in electrographic

Details Apparatus for controlling toner replenishment in electrographic Apparatus for controlling toner replenishment in electrographic

1985-06-07

1986-08-26

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DD, 118688, 118691, G03G 1508

Patent

active

046079440

ABSTRACT:
Apparatus for controlling the replenishment of toner in an electrographic reproduction apparatus includes means for monitoring toner concentration in an electrographic developer mix, and means for monitoring the rate of toner depletion from such mix in developing electrostatic images. The outputs of such monitoring means are algebraically summed to provide a control signal for controlling toner replenishment.

REFERENCES:
patent: 3635555 (1972-01-01), Kurahashi et al.
patent: 3674353 (1972-07-01), Trachtenberg
patent: 3779203 (1973-12-01), Altmann
patent: 3815988 (1974-06-01), McVeigh et al.
patent: 3910459 (1975-10-01), Bock et al.
patent: 3924462 (1975-12-01), Bock
patent: 4372672 (1983-02-01), Pries
patent: 4377338 (1983-03-01), Ernst
patent: 4385823 (1983-05-01), Kasper et al.
patent: 4431300 (1984-02-01), Snelling

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